JPH032667Y2 - - Google Patents
Info
- Publication number
- JPH032667Y2 JPH032667Y2 JP3791386U JP3791386U JPH032667Y2 JP H032667 Y2 JPH032667 Y2 JP H032667Y2 JP 3791386 U JP3791386 U JP 3791386U JP 3791386 U JP3791386 U JP 3791386U JP H032667 Y2 JPH032667 Y2 JP H032667Y2
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- large end
- oil
- cooking
- stove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010411 cooking Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 27
- 238000003754 machining Methods 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、エンジンのピストン冷却装置の改
良に関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an improvement in a piston cooling device for an engine.
（従来技術）
エンジンのピストン冷却装置として、オイルポ
ンプからクランクシヤフト主軸、クランクピン、
コンロツド大端部に至る油路を設け、この油路に
連通してコンロツド大端部に設けたオイル噴出孔
（ノズル）からピストン背面とシリンダの摺動面
に潤滑油を噴出させる構成の装置が採用されてい
る。(Prior art) As an engine piston cooling device, the oil pump, crankshaft main shaft, crank pin,
This device has an oil passage leading to the large end of the connecting rod, and is configured to communicate with this oil passage and spray lubricating oil from an oil jet hole (nozzle) provided at the large end of the connecting rod onto the back surface of the piston and the sliding surface of the cylinder. It has been adopted.
第４図はコンロツド大端部にオイル噴出孔を設
けた従来のコンロツドの正面図である。 FIG. 4 is a front view of a conventional cooking stove in which an oil spout hole is provided at the large end of the cooking stove.
図において、１はコンロツド本体、２はコンロ
ツド大端部、３はコンロツド大端部２とでクラン
クピン４を挟んでボルトで結合するコンロツドキ
ヤツプである。 In the figure, 1 is a connecting rod main body, 2 is a large end of the connecting rod, and 3 is a connecting rod cap that is connected to the large end 2 of the connecting rod with a crank pin 4 sandwiched therebetween.
５はコンロツド大端部２に設けたオイル噴出孔
で、このオイル噴出孔５は、コンロツド大端部内
周面に凹設した油路６′を介してクランクピン４
内に至る油路６に連通し、ピストンを冷却する潤
滑油を噴出する。 Reference numeral 5 denotes an oil spout hole provided in the large end portion 2 of the connecting rod.
The lubricating oil that cools the piston is ejected from the piston.
（考案が解決しようとする問題点）
上記する従来のピストン冷却装置におけるコン
ロツドの構成では、潤滑油を噴出するオイル噴出
孔がコンロツド大端付け根部に設けてあるところ
から、次のような問題がある。(Problems to be solved by the invention) In the configuration of the connecting rod in the conventional piston cooling device described above, the oil injection hole for spouting lubricating oil is provided at the base of the large end of the connecting rod, which causes the following problems. be.
(1) オイル噴出孔の形成は、コンロツドを鋳込ん
だ後、機械加工によつて穿孔するため、加工工
程が増え、コストアツプになる。(1) The oil spout holes are formed by machining after casting the conrod, which increases the number of machining steps and increases costs.
(2) オイル噴出孔の位置がコンロツドに対して最
も圧縮応力が大きくなる位置にあるため、コン
ロツド大端部の強度面からの配慮が必要とな
る。(2) Since the oil jet hole is located at the location where the compressive stress is greatest on the conrod, consideration must be given to the strength of the large end of the conrod.
(3) オイル噴出孔に通じるコンロツド大端部内周
面に設ける油路が圧縮応力が最も大きくなる位
置に来るため、コンロツド大端内周面の最大面
圧が高い。(3) Since the oil passage provided on the inner circumferential surface of the large end of the connecting rod leading to the oil spout hole is located at the position where the compressive stress is greatest, the maximum surface pressure on the inner circumferential surface of the large end of the connecting rod is high.
この考案は上記の点に鑑みなされたものであつ
て、コンロツド本体またはコンロツドキヤツプの
鋳込み時に、これ等の接合面に形成する凹溝をオ
イル噴出孔とし、オイル噴出孔を設けるための機
械加工（穿孔）を省き、コンロツド強度面からも
有利なピストン冷却装置を提供することを目的と
する。 This idea was devised in view of the above points, and when the stove body or stove cap is cast, the concave groove formed on the joint surface of these is used as an oil spout hole, and the machining process to provide the oil spout hole is used. The object of the present invention is to provide a piston cooling device that eliminates the need for drilling holes and is advantageous in terms of connecting rod strength.
（問題点を解決するための手段）
上記の目的を達成するためのこの考案の要旨と
するところは、コンロツド本体同志またはコンロ
ツド本体とコンロツドキヤツプとの接合部にオイ
ル噴出孔を形設したことを特徴とする内燃機関の
ピストン冷却装置にある。(Means for solving the problem) The gist of this invention to achieve the above purpose is to form an oil spout hole at the joint between the stove rod bodies or between the stove rod body and the stove cap. A piston cooling device for an internal combustion engine is characterized by:
（作用）
従つて、この考案によれば、コンロツド大端部
に設けるオイル噴出孔が、コンロツド本体同志ま
たはコンロツド本体とコンロツドキヤツプを組合
せる際に、これ等の接合面に予め形成した凹溝か
らなるから、従来のようなコンロツド本体に対す
る機械加工（穿孔）を必要とせず、コンロツド製
作時の加工工数を軽減し、またコンロツド大端部
に対する穿孔による強度低下がなく、コンロツド
大端部を小さくして機関全体の小型化に寄与す
る。(Function) Therefore, according to this invention, when the oil spout hole provided at the large end of the cooking rod is assembled with the cooking rod main body or the cooking rod main body and the cooking rod cap, the concave groove formed in advance on the joint surfaces of these two parts is used. This eliminates the need for machining (drilling) on the conrod body as in the past, reducing the number of machining steps required when manufacturing the conrod, and also reduces the strength of the conrod large end due to drilling, allowing the conrod large end to be made smaller. This contributes to downsizing the entire engine.
（実施例）
以下、この考案の実施例を図面に基づいて説明
する。(Example) Hereinafter, an example of this invention will be described based on the drawings.
尚、第４図と共通若しくは対等部分については
同一符号を付ける。 Note that parts common or equivalent to those in FIG. 4 are given the same reference numerals.
第１図はこの考案の第１実施例を示すコンロツ
ドの正面図である。 FIG. 1 is a front view of a cooking stove showing a first embodiment of this invention.
この実施例では、コンロツド大端部２とコンロ
ツドキヤツプ３との接合面に、これ等を鋳込む際
に予め凹溝７を形成し、両者の組合せによりこれ
をオイル噴出孔５とするものである。 In this embodiment, a concave groove 7 is formed in advance on the joint surface between the large end 2 of the stove rod 2 and the stove cap 3 when these are cast, and this is used as the oil spout hole 5 by combining the two. be.
而して、今、上記構成のコンロツドを、例えば
第２図に示すように90゜V型２気筒エンジンにお
いて、２つのコンロツドを共通のクランクピンに
連結するエンジンに適用した場合、一方の気筒８
ｂのコンロツドの大端部２とコンロツドキヤツプ
３との接合面に形設されるオイル噴出孔５から噴
出する潤滑油は他方の気筒８ａのピストン背面と
シリンダとの摺動面に向けて噴出されてピストン
を冷却するものである。 Now, if the connecting rod with the above configuration is applied to a 90° V-twin engine, for example, as shown in Fig. 2, where two connecting rods are connected to a common crank pin, one cylinder 8
The lubricating oil jetted out from the oil jet hole 5 formed at the joint surface between the large end 2 of the stove rod 2 and the stove cap 3 in b is jetted toward the sliding surface between the piston back surface of the other cylinder 8a and the cylinder. This is to cool the piston.
第３図はこの考案の第２実施例を示す一部を欠
除したコンロツドの側面図である。 FIG. 3 is a partially cutaway side view of a cooking stove showing a second embodiment of this invention.
この実施例では、共通のクランクピン４に対し
て２つのコンロツドを並べて取着する構成におい
て、常時接合状態におかれるコンロツド大端部２
の側面に凹溝７を形成したものである。 In this embodiment, in a configuration in which two connecting rods are attached side by side to a common crank pin 4, the large end 2 of the connecting rod is always connected.
A concave groove 7 is formed on the side surface.
而して、この実施例のコンロツドを上記第１実
施例同様に90゜V型２気筒エンジンに適用した場
合、オイル噴出孔５は両気筒のコンロツド大端部
の間に形設されることになり、オイル噴出孔５の
向きを任意に設定できる。 Therefore, when the connecting rod of this embodiment is applied to a 90° V-type two-cylinder engine as in the first embodiment, the oil injection hole 5 will be formed between the large ends of the connecting rods of both cylinders. Therefore, the direction of the oil jet hole 5 can be set arbitrarily.
尚、この考案は、クランクピン内の油路と、コ
ンロツド大端内周面に凹設する油路との位相を適
当に設定することにより、上記するような90゜V
型２気筒エンジンのみに限らず、他の多気筒エン
ジンにも適用可能とするものである。 In addition, this idea achieves the above-mentioned 90°V by appropriately setting the phase between the oil passage inside the crank pin and the oil passage recessed in the inner peripheral surface of the large end of the connecting rod.
The invention is applicable not only to two-cylinder engines but also to other multi-cylinder engines.
（効果）
上述のようにこの考案による場合は、次のよう
な効果を奏する。(Effects) As described above, this invention provides the following effects.
(1) ピストン冷却に必要な潤滑油を噴出するコン
ロツド大端部に設けるオイル噴出孔（ノズル）
を機械加工なしに形成でき、オイル噴出孔付加
によるコストアツプがない。(1) Oil spout hole (nozzle) installed at the large end of the connecting rod that spouts the lubricating oil necessary for cooling the piston.
can be formed without machining, and there is no cost increase due to the addition of oil jet holes.
(2) オイル噴出孔の位置をコンロツド大端付け根
から遠ざけることができ、応力集中による亀裂
の発生および破壊を低減できる。(2) The position of the oil jet hole can be moved away from the base of the large end of the connecting rod, reducing the occurrence of cracks and destruction due to stress concentration.
(3) コンロツト大端内周面に油路として設ける凹
溝をコンロツド大端内周面に掛かる圧縮応力が
最大となる点から離れた位置に設置可能である
ため、コンロツド大端内周面の最大面圧を低減
でき、コンロツド大端部を小さくしてエンジン
全体の小型化を可能にする。(3) The concave groove provided as an oil passage on the inner circumferential surface of the large end of the conrod can be installed at a position away from the point where the compressive stress applied to the inner circumferential surface of the large end of the conrod is at its maximum. The maximum surface pressure can be reduced, and the large end of the connecting rod can be made smaller, making it possible to downsize the entire engine.
第１図はこの考案の第１実施例を示すコンロツ
ドの正面図、第２図はＶ型エンジンに適用の説明
図、第３図はこの考案の第２実施例を示す一部を
欠除したコンロツドの側面図、第４図は従来のコ
ンロツドの正面図である。
１……コンロツド本体、２……コンロツド大端
部、３……コンロツドキヤツプ、４……クランク
ピン、５……オイル噴出孔、６……油路、７……
凹溝、８……気筒。
Fig. 1 is a front view of a conrod showing the first embodiment of this invention, Fig. 2 is an explanatory diagram of application to a V-type engine, and Fig. 3 shows a second embodiment of this invention with some parts omitted. A side view of the cooking stove, and FIG. 4 is a front view of a conventional cooking stove. 1... Storing rod body, 2... Storing rod large end, 3... Storing rod cap, 4... Crank pin, 5... Oil spout hole, 6... Oil passage, 7...
Concave groove, 8...cylinder.
Claims (1)
コンロツドキヤツプとの接合面にオイル噴出孔
を形設したことを特徴とする内燃機関のピスト
ン冷却装置。 (2) 前記オイル噴出孔は、コンロツド本体または
コンロツドキヤツプの鋳込み時に形成した凹溝
よりなる実用新案登録請求の範囲第１項記載の
エンジンのピストン冷却装置。[Scope of Claim for Utility Model Registration] (1) A piston cooling device for an internal combustion engine, characterized in that an oil spout hole is formed in the joint surface between the cooking rod bodies or between the cooking rod body and the cooking rod cap. (2) The piston cooling device for an engine according to claim 1, wherein the oil jet hole is a groove formed during casting of the connecting rod body or the connecting rod cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3791386U JPH032667Y2 (en) | 1986-03-14 | 1986-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3791386U JPH032667Y2 (en) | 1986-03-14 | 1986-03-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62150523U JPS62150523U (en) | 1987-09-24 |
| JPH032667Y2 true JPH032667Y2 (en) | 1991-01-24 |
Family
ID=30849665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3791386U Expired JPH032667Y2 (en) | 1986-03-14 | 1986-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032667Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2589045Y2 (en) * | 1993-03-05 | 1999-01-20 | 株式会社クボタ | Engine oil jet piston cooling system |
-
1986
- 1986-03-14 JP JP3791386U patent/JPH032667Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62150523U (en) | 1987-09-24 |
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